Magnesium
Magnesium is an essential mineral involved in many bodily processes. Considered by those who may fall short in diet or want a calmer evening routine.
What it is
An essential mineral; supplements use various magnesium salts.
Role in the body
Involved in energy metabolism, muscle and nerve function, and bone maintenance.
Why people consider it
Considered by people whose diet may fall short, or who are very active.
Food sources
- Nuts
- Seaweed
- Legumes
- Whole grains
- Leafy greens
Typical labeled usage
Follow the labeled serving; watch the total from food and supplements.
Recommended amount
The tolerable upper intake from supplements is about 350 mg/day for adults.
Amounts are common educational ranges based on public reference values and product labels — not individual medical advice. If you have a condition, take medication, or are pregnant or breastfeeding, consult a physician or pharmacist.
When people take it
Some take it in the evening or before bed.
Evidence summary
Magnesium is needed for normal muscle and nerve function
Established evidenceIts role as an essential nutrient is established; this does not promise specific effects.
Who should exercise caution
Who should exercise caution
- Consult a physician if you have reduced kidney function
Potential medication interactions
- May affect absorption of some antibiotics and bone medications
Possible side effects
- Loose stools (laxative effect)
Upper-limit guidance
There is an upper-limit guideline for supplemental magnesium; check labels and official references.
Products & brands
FAQs
Does magnesium help sleep?
Magnesium is an essential mineral but does not treat sleep problems. Some use it as part of an evening routine. See a physician if issues persist.
Related articles & packs
References
- Dietary Reference Intakes for Japanese (2020) — Ministry of Health, Labour and Welfare (Japan)
- Dietary Supplement Fact Sheets — NIH Office of Dietary Supplements
- Tolerable Upper Intake Levels for Vitamins and Minerals — European Food Safety Authority